Door



Oct. 9, 1928.

A. KlRscHBAUM Inventor,

By yAqrney.

' Albert Kirschbaum? Oct. 9, 1928. 1,686,819

A. KlRscHBAUM DOOR 2 Sheets-Sheet 2 Fig. 3.

III l Tnventor,

Albert Kir' schlo u M a fc/L Mg By Attorney.

Patented @et 9, 1928.

UNITED STATES 1,686,819 PATENT OFFICE.-

ALBERT KIRSCHBAUM, OF NEWARK, NEW .ERSEY noon.

Application ined May 26,

fings which form a part of thisdescription,

FiOure 1 is a perspective fromv the room side showing a door whichembodies this invention with the main door thrown back and the screendoor closed,

Fig. 2 is a horizontal section on the line VII-II of Fig. 1, showing thedoors in the same position. l l 1 F ig. 3 is a Vertical section throughthe doors 1 on the line III-III of Figs. 4 and 5.

Fig. 4 is an elevation of a portion of the two doors together as theyappear from the corridor side. Y

Fig. 5 is a horizontal section on the line V-V of Figs. 3 and 4, takenpartly through the door pulls. l

Fig. 6 shows the detachable pull from the side which attaches tothedoor. 7

A door` frame 10 has its middle portion screened by a screen door with amain portion 11 of half the normal door thickness and a portion 11adjacent to the hinge edge o1- normal door thickness which is attachedto the door frame by hinges 12, 12. The screen door is of such Verticallength and is so hung that it will be oppositefthe lines of sight ofpeople of various heights when standing, but does not extend to theupper `and lower portions of the frame opening. A main unitary doorconsisting of upper and lower portions 13, 13 of normal door thicknessand a middle portion `18 of approximately half thickness closes theupper and lower portions of the frame opening and is hinged to the Ydoor frameby hinges 14, 14, the axes of whichare onthe same line withthe axes of the hinges for the main door. All of the hinges may be suchas are shown in my United States lPatent No. 1,619,578, dated March 1,1927. The 'mid-` dle lportion of the'main door adjacent toits hinge'edge is cut away and the rest oi the middle portion is recessed toapproximately halt' thickness on the screen 'doorside so that the screendoor will set in flush. The two doors when together areV kept apartabout a sixteenth of an inch by pads of felt y15, 15. The joints at1927. serial No. 194,277. Y

`the top and bottom of the screen dor vare slightly open also,= so that,air cany circulate between the doors and maintain the same temperatureon both sides of both doors andkeep them `from warping. At the hingeedge the joints are stepped sotha't when-the doors are together therewill be no crack through which one can see.

The screen door has on the side away from the'other door a fixed pull 18andv on the opposite side a pull-block 19. Machine screws 21, 21 secureone tothe other. A hole 23 is cut in the main door through which thepull-block passes kwhen the doors are both to be closed and openedtogether. f A detachable pull 24 is attached to the pull-block. It has abaseV which is larger than hole through which the pull-block passes sothat it serves to clamp the two doors together. The base has a T-slo't25 which is engaged by a T-head 26 formed on the pull-block. A knurledhead screw 27 also connects the detachable pull to the pull-block. Thispull is in the form of an upstanding hook and can be used as an arm-pullif one needs to open the door when both hands are carrying a tray. Atits end is a rubber bunter button 30.

Ordinarily when the room is occupied and there is .frequent occasion topass in and out, the main doorrwill be thrown back and only the screendoor kept closed. When the doors are are tobe separated and so used, thedetach! able pull is taken off from thepull-block and reattachedafter-.separating the doors; To insure that the screen door is keptclosed, a door closer not shown may be attached to it. Especiallysuitable for this purpose is a` concealed type of closer and check whichisset in a mortice in the door frame.

' I claim:

1. In combination with a door-frame, a screen door hinged to thedoorfframe for screening the middle portion of the frame opening, themain portion of the screen door being of approximately halt' et normaldoor thickness, and a main door for closing the upper'and lower portionsof the frame opening l`and hinged to the door frame, the middle Vportionofthe main door being` 01": approxiscreen door hinged to thedoor-rameforv screening the middle portion ot' the frame opening, the portionoffthe'screen door adjacent to its hingeedge being of normal door s,

thickness and the rest being of approximately half thickness, and a maindooi1 for closing the upper and lower portions of the frame opening andhinged to the door-frame, the middle portion of the main door adjacentto its hinge edge being out away and the rest of the middle portionbeing of approximately half thickness so that the screen door may be setin flush. the hinges for both doors having their axes in the 10 saineline.

3. In combination With'afdoor-rarne, a

Legame screen door hinged to the door-fraine for screeningy the middleportion oic the' frame opening, a main unitary door for closing theupper and lower portions of the frame opening and hinged to thedoor-frame, the hinges for both doors having their axes on the sameline, and the doors lying together When closed,

vand a detachable door-pull exterior to the main door and'co-nnectedthrough an opening 20vv therein to the screen door.-

ALBERT KIRSCHBAUM.

